Missouri has become a key battleground for legalized sports betting, as it’s likely the last potential state for legalization in 2024.

If voters approve the constitutional amendment at the polls next month, each Missouri sports team and casino would be eligible to operate retail and online sports betting. Each team and land-based casino would be eligible for one retail sports betting license and one online sports betting license each. Each individual team and casino would be able to partner with up to one online sports betting operator.

In total, the state could see 19 retail sports betting licenses and 21 online sports betting licenses under this framework.

FanDuel reported a $5 million donation to the Winning for Missouri Education campaign on Monday, matching a $5 million donation DraftKings made to the campaign last week. The pro-sports betting campaign has seen the sports betting operators donate more than $31.5 million to its cause.

However, Caesars Entertainment is keeping pace and has been steadily providing a stream of money to the Missourians Against the Deceptive Online Gambling Amendment campaign. Through its land-based Tropicana Casino, Caesars donated an additional $3.3 million to the anti-sports betting group.